Alt-BEAM Archive

Message #05355



To: beam mailing list beam@sgiblab.sgi.com
From: David Perry davidperry@geocities.com
Date: Sunday, 18 July 1999 3:31
Subject: which SE to use?


=

ok the dilemna, not to release to many secrets but my caterplil=
ler bot has 4 motors which draw around 70ma each, plus there is an addition=
al circuit to make it make a cricket sound when dark (it draws 1ma while id=
le and 8ma while making annoying noise) plus a microcore w/ LED's (5) , 2 r=
eversers and cold start PNC and 4 high power h-bridges and ahhh, thats abou=
t it. As you can imagine i really need a bigger robot to carry all the circ=
uitry. Now to power it i have 2 24x33 solarcells and a 1farad cap. It hasn'=
t really got a very stiff walking gate so losing sync ain't much of a probl=
em. Now what sort of solarengine do i use? d1, which i don't want cause i'm=
impatient or a PM1 SE? For emergencies i also have a .33 gold cap and 2 22=
x24mm solar cells which i might be willing to give up to use on this bot? P=
lease help!
=

David Perry


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DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> PUBLIC "-//W3C//DTD W3 HTML//EN">
x">
-----Original Message-----
<=
B>From: =

James Wilson <
href=3D"mailto:jameswilson1@home.com">jameswilson1@home.com>
=
To: =

beam@sgiblab.sgi.com &l=
t;
href=3D"mailto:beam@sgiblab.sgi.com">beam@sgiblab.sgi.com>
>Date: =

Thursday, 22 July 1999 1:46
Subject: Re: which SE to =

use?


What about the new circuit that Craig has come up =

with?  Which I can't seem to find but it is on his site.  The=
SE =

seem to be perfect for use in solar walkers because it only sends power=
to =

the motors when it has power to spare and keeps the brain "ON"=
; =

in-between.

 

James :-))


style=3D"BORDER-LEFT: #000000 solid 2px; MARGIN-LEFT: 5px; MARGIN-RIGHT=
: 0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">
----- Original Message -----


style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black">=
From: =


title=3Ddavidperry@geocities.com>David Perry

To:
href=3D"mailto:beam@sgiblab.sgi.com" =

title=3Dbeam@sgiblab.sgi.com>beam@sgiblab.sgi.com

Sent: Tuesday, July 20, 1999=
2:06 =

PM

Subject: Re: which SE to use=
?



so, does anyone know which circ=
uit i =

should use, i'd like to go with the d1 SE but i don't want to overc=
harge =

the gold cap and blow it up. But i'm not sure if the PM1 SE can han=
dle =

these sorts of loads. any1?

 

David Perry

 


style=3D"BORDER-LEFT: #000000 solid 2px; MARGIN-LEFT: 5px; PADDING-=
LEFT: 5px">
-----Original =

Message-----
From: David Perry <
href=3D"mailto:davidperry@geocities.com">davidperry@geocities.c=
om>
To: =

beam mailing list <
href=3D"mailto:beam@sgiblab.sgi.com">beam@sgiblab.sgi.com&g=
t;
Date: =

Sunday, 18 July 1999 3:31
Subject: which SE to =

use?


ok the dilemna, not to rele=
ase to =

many secrets but my caterpliller bot has 4 motors which draw ar=
ound =

70ma each, plus there is an additional circuit to make it make =
a =

cricket sound when dark (it draws 1ma while idle and 8ma while =

making annoying noise) plus a microcore w/ LED's (5) , 2 revers=
ers =

and cold start PNC and 4 high power h-bridges and ahhh, thats a=
bout =

it. As you can imagine i really need a bigger robot to carry al=
l the =

circuitry. Now to power it i have 2 24x33 solarcells and a 1far=
ad =

cap. It hasn't really got a very stiff walking gate so losing s=
ync =

ain't much of a problem. Now what sort of solarengine do i use?=
d1, =

which i don't want cause i'm impatient or a PM1 SE? For emergen=
cies =

i also have a .33 gold cap and 2 22x24mm solar cells which i mi=
ght =

be willing to give up to use on this bot? Please help! DIV>
 

David =

Perry




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